You're thinking Mountain Dew, right? You'd be wrong.
Be careful, little Timmy could end up sleeping with the fishes.

From UK DailyMail:

It has become a big no-no in school lunchboxes because of its unhealthy reputation.

But it seems that Sunny D, formerly known as Sunny Delight, is not half as bad for children as it is for fish.

Around 8,000 litres of concentrate used to make the drink leaked into a watercourse on Wednesday morning, turning the river bright yellow.

Dozens of fish were found floating on the surface, poisoned by the lurid mixture.

The spill of 'sub-standard' juice was a category one pollution incident, the most serious kind, according to the Environment Agency.

It was caused by a split in an underground fibreglass tank at the Gerber Foods Soft Drink factory in Bridgwater, Somerset. Approximately six tons of juice and concentrate, due for disposal, seeped into a tributary of the River Parrett.